Bottlehead Single Ended eXperimenter's Kit 2.1

Thanks for the educated response. My bad.

Well, that sucks. Guess I'll just have to order from BH.

I did roll the 12AU7 to an RCA cleartop, which I thought evened out the bloom, but left the circuit alone. The S.E.X. is more moddable/upgradeable on the component side, and less so on the tube rolling side. I concur with Loquah on Head-Fi that you could probably get a Crack to sound about as good as a stock S.E.X. with tube rolling and mods (which would probably make it more expensive at that point), but the S.E.X. is going to take a solid lead once you install the C4S and upgrade a couple of key caps. My S.E.X. has both impedance switches and C4S upgrades, as well as upgraded film resistors in two key locations on the C4S board, two pairs of upgraded film/teflon caps, and another set of upgraded resistors. It is, quite simply, the best amp I've ever heard. And I made it myself.